Effect of heat treatment on the corrosion resistance of Ni-based and Cu-based amorphous alloy coatings
- Authors
- Yoo, YH[Yoo, Y. H.]; Lee, SH[Lee, S. H.]; Kim, JG[Kim, J. G.]; Kim, JS[Kim, J. S.]; Lee, C[Lee, C.]
- Issue Date
- 11-Aug-2008
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- amorphous materials; crystal structure; kinetic spray coating; corrosion; electrochemical impedance spectroscopy
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.461, no.1-2, pp.304 - 311
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 461
- Number
- 1-2
- Start Page
- 304
- End Page
- 311
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/80874
- DOI
- 10.1016/j.jallcom.2007.06.118
- ISSN
- 0925-8388
- Abstract
- Ni57Ti18Zr20Si2Sn3 and Cu54Ni6Zr22Ti18 amorphous feedstock fabricated by gas atomization were deposited on mild steel substrate by the kinetic spray technique. These as-sprayed coating samples were annealed at each suitable temperature to form three different matrix structures: amorphous, partially crystallized on amorphous and fully crystallized. Each structure was confirmed by XRD, TEM and DSC analyses. In the results of electrochemical tests conducted in a simulated acid rain solution, the amorphous structured coatings exhibit a superior corrosion resistance to the crystallized coatings with high polarization resistance, and the corrosion resistance decreased with increasing fraction of crystallization. As a function of time, the amorphous structure coatings maintained high protective efficiency and low porosity for 9 days immersion. The Ni-based alloy coatings showed better corrosion resistance than the Cu-based ones for each type of structure. (C) 2007 Elsevier B.V. All rights reserved.
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Collections - Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
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